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Finding the Fourth Proportional to 400,456.40, 600,355.32 and 187,118.79

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Solution

The fourth proportional to 400,456.40, 600,355.32 and 187,118.79 is: 280,524.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,456.40 : 600,355.32 = 187,118.79 : x
  2. Step 2: Convert to fraction form
    400,456.40/600,355.32 = 187,118.79/x
  3. Step 3: Cross multiply
    400,456.40x = 600,355.32 × 187,118.79
  4. Step 4: Simplify right side
    400,456.40x = 112,337,761,048.46
  5. Step 5: Solve for x
    x = 112,337,761,048.46/400,456.40
  6. Step 6: Final answer
    x = 280,524.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.